Sign In Start Free Trial

Book Overview & Buying
Table Of Contents
Feedback & Rating

BeagleBone for Secret Agents

By : Joshua Datko

4 (2)

BeagleBone for Secret Agents

4 (2)

By: Joshua Datko

Overview of this book

If you have some experience with the BeagleBone or similar embedded systems and want to learn more about security and privacy, this book is for you. Alternatively, if you have a security and privacy background and want to learn more about embedded development, this book is for you. You should have some familiarity with Linux systems and with the C and Python programming languages.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Creating Your BeagleBone Black Development Environment

1. Creating Your BeagleBone Black Development Environment

Introducing the BBB

Creating an embedded development environment with Emacs

Finding additional background information

Summary

2. Circumventing Censorship with a Tor Bridge

2. Circumventing Censorship with a Tor Bridge

Learning about Tor

Installing Tor on BBB

Understanding Tor exit policies

Setting bridge-specific settings

Starting your new Tor bridge

Enabling port forwarding

Adding physical interfaces to the bridge

Determining your bandwidth with speedtest-cli

Controlling the bridge with the Stem library

Connecting to your obfuscated bridge

Continuing with Tor-related projects

Summary

3. Adding Hardware Security with the CryptoCape

3. Adding Hardware Security with the CryptoCape

Exploring the differences between hardware and software cryptography

Touring the CryptoCape

Discovering the I2C protocol

Understanding the benefit of cape EEPROMs

Creating an eLinux wiki site

Keeping time with a real-time clock

Trusting computing devices with a Trusted Platform Module

Providing hardware authentication with ATSHA204 and ATECC108

Encrypting EEPROM data with the ATAES132

Combining the BBB with an ATmega328p

Building a two-factor biometric system

Summary

4. Protecting GPG Keys with a Trusted Platform Module

4. Protecting GPG Keys with a Trusted Platform Module

History of PGP

Developing a threat model

Generating GPG keys

Protecting your GPG key with a TPM

Adding the keypad

Taking ownership of the TPM

Extending a PCR

Unlocking your key at startup

Iterating on the threat model

Summary

5. Chatting Off-the-Record

5. Chatting Off-the-Record

Communicating Off-the-Record – a background

Installing BitlBee on the BeagleBone

Adding OTR to your BitlBee server

Marshalling your IRC connections with a Bouncer

Extending the project

Summary

A. Selected Bibliography

Chapter 1

Chapter 2

Chapter 3

Chapter 4

Chapter 5

Index

Index

Customer Reviews

4 (2)

5 star

50%

4 star

0

3 star

50%

2 star

0

1 star

0

Enabling port forwarding

We know that we need to forward port 9001, as it is the ORPort, but we need to know which port the obfsproxy software runs on. This will be logged in the same file and will be discovered by searching the Tor log with the following command:

grep obfs3 /var/log/tor/notices.log

The previous command should yield the following search result:

Mar 05 01:56:04.000 [notice] Registered server transport 'obfs3' at '0.0.0.0:59519'

The obfsproxy port for our obfs3 service is on 59519. From your home router, configure port forwarding from 9001, and configure port forwarding from 59519 from your external IP to BBB. It will also help if you give your BBB a static internal IP. Consult your router's manual for directions. Alternatively, you can specify the port with the following line in the /etc/tor/torrc file:

ServerTransportListenAddr obfs3 0.0.0.0:xxxx

Replace the x's with the desired port address. However, it's best to let obfsproxy pick a random...

Search

Your notes and bookmarks